<?php defined('BASEPATH') || exit('No direct script access allowed'); ?>

CRITICAL - 2018-09-27 08:13:10 --> Object of class CodeIgniter\Database\MySQLi\Result could not be converted to string
#0 [internal function]: CodeIgniter\Debug\Exceptions->errorHandler(4096, 'Object of class...', '/home/joe/progr...', 416, Array)
#1 /home/joe/program/web/exam/system/Database/Query.php(416): implode(',', Array)
#2 /home/joe/program/web/exam/system/Database/Query.php(385): CodeIgniter\Database\Query->matchNamedBinds('SELECT `id`, `t...', Array)
#3 /home/joe/program/web/exam/system/Database/Query.php(180): CodeIgniter\Database\Query->compileBinds()
#4 /home/joe/program/web/exam/system/Database/BaseConnection.php(626): CodeIgniter\Database\Query->getQuery()
#5 /home/joe/program/web/exam/system/Database/BaseBuilder.php(1384): CodeIgniter\Database\BaseConnection->query('SELECT `id`, `t...', Array)
#6 /home/joe/program/web/exam/system/Model.php(329): CodeIgniter\Database\BaseBuilder->get()
#7 /home/joe/program/web/exam/application/Models/QuestionModel.php(43): CodeIgniter\Model->find()
#8 /home/joe/program/web/exam/application/Controllers/Test.php(39): App\Models\QuestionModel->random(Object(CodeIgniter\Database\MySQLi\Result), '1', '100')
#9 /home/joe/program/web/exam/system/CodeIgniter.php(807): App\Controllers\Test->page()
#10 /home/joe/program/web/exam/system/CodeIgniter.php(305): CodeIgniter\CodeIgniter->runController(Object(App\Controllers\Test))
#11 /home/joe/program/web/exam/system/CodeIgniter.php(220): CodeIgniter\CodeIgniter->handleRequest(NULL, Object(Config\Cache), false)
#12 /home/joe/program/web/exam/public/index.php(37): CodeIgniter\CodeIgniter->run()
#13 {main}
CRITICAL - 2018-09-27 08:13:10 --> Object of class CodeIgniter\Database\MySQLi\Result could not be converted to string
#0 [internal function]: CodeIgniter\Debug\Exceptions->errorHandler(4096, 'Object of class...', '/home/joe/progr...', 416, Array)
#1 /home/joe/program/web/exam/system/Database/Query.php(416): implode(',', Array)
#2 /home/joe/program/web/exam/system/Database/Query.php(385): CodeIgniter\Database\Query->matchNamedBinds('SELECT `id`, `t...', Array)
#3 /home/joe/program/web/exam/system/Database/Query.php(180): CodeIgniter\Database\Query->compileBinds()
#4 /home/joe/program/web/exam/system/Database/BaseConnection.php(626): CodeIgniter\Database\Query->getQuery()
#5 /home/joe/program/web/exam/system/Database/BaseBuilder.php(1384): CodeIgniter\Database\BaseConnection->query('SELECT `id`, `t...', Array)
#6 /home/joe/program/web/exam/system/Model.php(329): CodeIgniter\Database\BaseBuilder->get()
#7 /home/joe/program/web/exam/application/Models/QuestionModel.php(43): CodeIgniter\Model->find()
#8 /home/joe/program/web/exam/application/Controllers/Test.php(39): App\Models\QuestionModel->random(Object(CodeIgniter\Database\MySQLi\Result), '2', '50')
#9 /home/joe/program/web/exam/system/CodeIgniter.php(807): App\Controllers\Test->page()
#10 /home/joe/program/web/exam/system/CodeIgniter.php(305): CodeIgniter\CodeIgniter->runController(Object(App\Controllers\Test))
#11 /home/joe/program/web/exam/system/CodeIgniter.php(220): CodeIgniter\CodeIgniter->handleRequest(NULL, Object(Config\Cache), false)
#12 /home/joe/program/web/exam/public/index.php(37): CodeIgniter\CodeIgniter->run()
#13 {main}
CRITICAL - 2018-09-27 08:13:10 --> Object of class CodeIgniter\Database\MySQLi\Result could not be converted to string
#0 [internal function]: CodeIgniter\Debug\Exceptions->errorHandler(4096, 'Object of class...', '/home/joe/progr...', 416, Array)
#1 /home/joe/program/web/exam/system/Database/Query.php(416): implode(',', Array)
#2 /home/joe/program/web/exam/system/Database/Query.php(385): CodeIgniter\Database\Query->matchNamedBinds('SELECT `id`, `t...', Array)
#3 /home/joe/program/web/exam/system/Database/Query.php(180): CodeIgniter\Database\Query->compileBinds()
#4 /home/joe/program/web/exam/system/Database/BaseConnection.php(626): CodeIgniter\Database\Query->getQuery()
#5 /home/joe/program/web/exam/system/Database/BaseBuilder.php(1384): CodeIgniter\Database\BaseConnection->query('SELECT `id`, `t...', Array)
#6 /home/joe/program/web/exam/system/Model.php(329): CodeIgniter\Database\BaseBuilder->get()
#7 /home/joe/program/web/exam/application/Models/QuestionModel.php(43): CodeIgniter\Model->find()
#8 /home/joe/program/web/exam/application/Controllers/Test.php(39): App\Models\QuestionModel->random(Object(CodeIgniter\Database\MySQLi\Result), '3', '50')
#9 /home/joe/program/web/exam/system/CodeIgniter.php(807): App\Controllers\Test->page()
#10 /home/joe/program/web/exam/system/CodeIgniter.php(305): CodeIgniter\CodeIgniter->runController(Object(App\Controllers\Test))
#11 /home/joe/program/web/exam/system/CodeIgniter.php(220): CodeIgniter\CodeIgniter->handleRequest(NULL, Object(Config\Cache), false)
#12 /home/joe/program/web/exam/public/index.php(37): CodeIgniter\CodeIgniter->run()
#13 {main}
CRITICAL - 2018-09-27 08:17:33 --> Object of class CodeIgniter\Database\MySQLi\Result could not be converted to string
#0 [internal function]: CodeIgniter\Debug\Exceptions->errorHandler(4096, 'Object of class...', '/home/joe/progr...', 416, Array)
#1 /home/joe/program/web/exam/system/Database/Query.php(416): implode(',', Array)
#2 /home/joe/program/web/exam/system/Database/Query.php(385): CodeIgniter\Database\Query->matchNamedBinds('SELECT `id`, `t...', Array)
#3 /home/joe/program/web/exam/system/Database/Query.php(180): CodeIgniter\Database\Query->compileBinds()
#4 /home/joe/program/web/exam/system/Database/BaseConnection.php(626): CodeIgniter\Database\Query->getQuery()
#5 /home/joe/program/web/exam/system/Database/BaseBuilder.php(1384): CodeIgniter\Database\BaseConnection->query('SELECT `id`, `t...', Array)
#6 /home/joe/program/web/exam/system/Model.php(329): CodeIgniter\Database\BaseBuilder->get()
#7 /home/joe/program/web/exam/application/Models/QuestionModel.php(43): CodeIgniter\Model->find()
#8 /home/joe/program/web/exam/application/Controllers/Test.php(39): App\Models\QuestionModel->random(Object(CodeIgniter\Database\MySQLi\Result), '1', '100')
#9 /home/joe/program/web/exam/system/CodeIgniter.php(807): App\Controllers\Test->page()
#10 /home/joe/program/web/exam/system/CodeIgniter.php(305): CodeIgniter\CodeIgniter->runController(Object(App\Controllers\Test))
#11 /home/joe/program/web/exam/system/CodeIgniter.php(220): CodeIgniter\CodeIgniter->handleRequest(NULL, Object(Config\Cache), false)
#12 /home/joe/program/web/exam/public/index.php(37): CodeIgniter\CodeIgniter->run()
#13 {main}
CRITICAL - 2018-09-27 08:17:33 --> Object of class CodeIgniter\Database\MySQLi\Result could not be converted to string
#0 [internal function]: CodeIgniter\Debug\Exceptions->errorHandler(4096, 'Object of class...', '/home/joe/progr...', 416, Array)
#1 /home/joe/program/web/exam/system/Database/Query.php(416): implode(',', Array)
#2 /home/joe/program/web/exam/system/Database/Query.php(385): CodeIgniter\Database\Query->matchNamedBinds('SELECT `id`, `t...', Array)
#3 /home/joe/program/web/exam/system/Database/Query.php(180): CodeIgniter\Database\Query->compileBinds()
#4 /home/joe/program/web/exam/system/Database/BaseConnection.php(626): CodeIgniter\Database\Query->getQuery()
#5 /home/joe/program/web/exam/system/Database/BaseBuilder.php(1384): CodeIgniter\Database\BaseConnection->query('SELECT `id`, `t...', Array)
#6 /home/joe/program/web/exam/system/Model.php(329): CodeIgniter\Database\BaseBuilder->get()
#7 /home/joe/program/web/exam/application/Models/QuestionModel.php(43): CodeIgniter\Model->find()
#8 /home/joe/program/web/exam/application/Controllers/Test.php(39): App\Models\QuestionModel->random(Object(CodeIgniter\Database\MySQLi\Result), '2', '50')
#9 /home/joe/program/web/exam/system/CodeIgniter.php(807): App\Controllers\Test->page()
#10 /home/joe/program/web/exam/system/CodeIgniter.php(305): CodeIgniter\CodeIgniter->runController(Object(App\Controllers\Test))
#11 /home/joe/program/web/exam/system/CodeIgniter.php(220): CodeIgniter\CodeIgniter->handleRequest(NULL, Object(Config\Cache), false)
#12 /home/joe/program/web/exam/public/index.php(37): CodeIgniter\CodeIgniter->run()
#13 {main}
CRITICAL - 2018-09-27 08:17:33 --> Object of class CodeIgniter\Database\MySQLi\Result could not be converted to string
#0 [internal function]: CodeIgniter\Debug\Exceptions->errorHandler(4096, 'Object of class...', '/home/joe/progr...', 416, Array)
#1 /home/joe/program/web/exam/system/Database/Query.php(416): implode(',', Array)
#2 /home/joe/program/web/exam/system/Database/Query.php(385): CodeIgniter\Database\Query->matchNamedBinds('SELECT `id`, `t...', Array)
#3 /home/joe/program/web/exam/system/Database/Query.php(180): CodeIgniter\Database\Query->compileBinds()
#4 /home/joe/program/web/exam/system/Database/BaseConnection.php(626): CodeIgniter\Database\Query->getQuery()
#5 /home/joe/program/web/exam/system/Database/BaseBuilder.php(1384): CodeIgniter\Database\BaseConnection->query('SELECT `id`, `t...', Array)
#6 /home/joe/program/web/exam/system/Model.php(329): CodeIgniter\Database\BaseBuilder->get()
#7 /home/joe/program/web/exam/application/Models/QuestionModel.php(43): CodeIgniter\Model->find()
#8 /home/joe/program/web/exam/application/Controllers/Test.php(39): App\Models\QuestionModel->random(Object(CodeIgniter\Database\MySQLi\Result), '3', '50')
#9 /home/joe/program/web/exam/system/CodeIgniter.php(807): App\Controllers\Test->page()
#10 /home/joe/program/web/exam/system/CodeIgniter.php(305): CodeIgniter\CodeIgniter->runController(Object(App\Controllers\Test))
#11 /home/joe/program/web/exam/system/CodeIgniter.php(220): CodeIgniter\CodeIgniter->handleRequest(NULL, Object(Config\Cache), false)
#12 /home/joe/program/web/exam/public/index.php(37): CodeIgniter\CodeIgniter->run()
#13 {main}
CRITICAL - 2018-09-27 08:20:54 --> Object of class CodeIgniter\Database\MySQLi\Result could not be converted to string
#0 [internal function]: CodeIgniter\Debug\Exceptions->errorHandler(4096, 'Object of class...', '/home/joe/progr...', 416, Array)
#1 /home/joe/program/web/exam/system/Database/Query.php(416): implode(',', Array)
#2 /home/joe/program/web/exam/system/Database/Query.php(385): CodeIgniter\Database\Query->matchNamedBinds('SELECT `id`, `t...', Array)
#3 /home/joe/program/web/exam/system/Database/Query.php(180): CodeIgniter\Database\Query->compileBinds()
#4 /home/joe/program/web/exam/system/Database/BaseConnection.php(626): CodeIgniter\Database\Query->getQuery()
#5 /home/joe/program/web/exam/system/Database/BaseBuilder.php(1384): CodeIgniter\Database\BaseConnection->query('SELECT `id`, `t...', Array)
#6 /home/joe/program/web/exam/system/Model.php(329): CodeIgniter\Database\BaseBuilder->get()
#7 /home/joe/program/web/exam/application/Models/QuestionModel.php(43): CodeIgniter\Model->find()
#8 /home/joe/program/web/exam/application/Controllers/Test.php(39): App\Models\QuestionModel->random(Object(CodeIgniter\Database\MySQLi\Result), '3', '50')
#9 /home/joe/program/web/exam/system/CodeIgniter.php(807): App\Controllers\Test->page()
#10 /home/joe/program/web/exam/system/CodeIgniter.php(305): CodeIgniter\CodeIgniter->runController(Object(App\Controllers\Test))
#11 /home/joe/program/web/exam/system/CodeIgniter.php(220): CodeIgniter\CodeIgniter->handleRequest(NULL, Object(Config\Cache), false)
#12 /home/joe/program/web/exam/public/index.php(37): CodeIgniter\CodeIgniter->run()
#13 {main}
CRITICAL - 2018-09-27 08:20:54 --> Object of class CodeIgniter\Database\MySQLi\Result could not be converted to string
#0 [internal function]: CodeIgniter\Debug\Exceptions->errorHandler(4096, 'Object of class...', '/home/joe/progr...', 416, Array)
#1 /home/joe/program/web/exam/system/Database/Query.php(416): implode(',', Array)
#2 /home/joe/program/web/exam/system/Database/Query.php(385): CodeIgniter\Database\Query->matchNamedBinds('SELECT `id`, `t...', Array)
#3 /home/joe/program/web/exam/system/Database/Query.php(180): CodeIgniter\Database\Query->compileBinds()
#4 /home/joe/program/web/exam/system/Database/BaseConnection.php(626): CodeIgniter\Database\Query->getQuery()
#5 /home/joe/program/web/exam/system/Database/BaseBuilder.php(1384): CodeIgniter\Database\BaseConnection->query('SELECT `id`, `t...', Array)
#6 /home/joe/program/web/exam/system/Model.php(329): CodeIgniter\Database\BaseBuilder->get()
#7 /home/joe/program/web/exam/application/Models/QuestionModel.php(43): CodeIgniter\Model->find()
#8 /home/joe/program/web/exam/application/Controllers/Test.php(39): App\Models\QuestionModel->random(Object(CodeIgniter\Database\MySQLi\Result), '1', '100')
#9 /home/joe/program/web/exam/system/CodeIgniter.php(807): App\Controllers\Test->page()
#10 /home/joe/program/web/exam/system/CodeIgniter.php(305): CodeIgniter\CodeIgniter->runController(Object(App\Controllers\Test))
#11 /home/joe/program/web/exam/system/CodeIgniter.php(220): CodeIgniter\CodeIgniter->handleRequest(NULL, Object(Config\Cache), false)
#12 /home/joe/program/web/exam/public/index.php(37): CodeIgniter\CodeIgniter->run()
#13 {main}
CRITICAL - 2018-09-27 08:20:54 --> Object of class CodeIgniter\Database\MySQLi\Result could not be converted to string
#0 [internal function]: CodeIgniter\Debug\Exceptions->errorHandler(4096, 'Object of class...', '/home/joe/progr...', 416, Array)
#1 /home/joe/program/web/exam/system/Database/Query.php(416): implode(',', Array)
#2 /home/joe/program/web/exam/system/Database/Query.php(385): CodeIgniter\Database\Query->matchNamedBinds('SELECT `id`, `t...', Array)
#3 /home/joe/program/web/exam/system/Database/Query.php(180): CodeIgniter\Database\Query->compileBinds()
#4 /home/joe/program/web/exam/system/Database/BaseConnection.php(626): CodeIgniter\Database\Query->getQuery()
#5 /home/joe/program/web/exam/system/Database/BaseBuilder.php(1384): CodeIgniter\Database\BaseConnection->query('SELECT `id`, `t...', Array)
#6 /home/joe/program/web/exam/system/Model.php(329): CodeIgniter\Database\BaseBuilder->get()
#7 /home/joe/program/web/exam/application/Models/QuestionModel.php(43): CodeIgniter\Model->find()
#8 /home/joe/program/web/exam/application/Controllers/Test.php(39): App\Models\QuestionModel->random(Object(CodeIgniter\Database\MySQLi\Result), '2', '50')
#9 /home/joe/program/web/exam/system/CodeIgniter.php(807): App\Controllers\Test->page()
#10 /home/joe/program/web/exam/system/CodeIgniter.php(305): CodeIgniter\CodeIgniter->runController(Object(App\Controllers\Test))
#11 /home/joe/program/web/exam/system/CodeIgniter.php(220): CodeIgniter\CodeIgniter->handleRequest(NULL, Object(Config\Cache), false)
#12 /home/joe/program/web/exam/public/index.php(37): CodeIgniter\CodeIgniter->run()
#13 {main}
CRITICAL - 2018-09-27 08:22:45 --> Cannot use object of type mysqli as array
#0 /home/joe/program/web/exam/application/Controllers/Test.php(37): App\Models\CategoryModel->getChildren('23', 'id')
#1 /home/joe/program/web/exam/system/CodeIgniter.php(807): App\Controllers\Test->page()
#2 /home/joe/program/web/exam/system/CodeIgniter.php(305): CodeIgniter\CodeIgniter->runController(Object(App\Controllers\Test))
#3 /home/joe/program/web/exam/system/CodeIgniter.php(220): CodeIgniter\CodeIgniter->handleRequest(NULL, Object(Config\Cache), false)
#4 /home/joe/program/web/exam/public/index.php(37): CodeIgniter\CodeIgniter->run()
#5 {main}
CRITICAL - 2018-09-27 08:22:45 --> Cannot use object of type mysqli as array
#0 /home/joe/program/web/exam/application/Controllers/Test.php(37): App\Models\CategoryModel->getChildren('23', 'id')
#1 /home/joe/program/web/exam/system/CodeIgniter.php(807): App\Controllers\Test->page()
#2 /home/joe/program/web/exam/system/CodeIgniter.php(305): CodeIgniter\CodeIgniter->runController(Object(App\Controllers\Test))
#3 /home/joe/program/web/exam/system/CodeIgniter.php(220): CodeIgniter\CodeIgniter->handleRequest(NULL, Object(Config\Cache), false)
#4 /home/joe/program/web/exam/public/index.php(37): CodeIgniter\CodeIgniter->run()
#5 {main}
CRITICAL - 2018-09-27 08:22:45 --> Cannot use object of type mysqli as array
#0 /home/joe/program/web/exam/application/Controllers/Test.php(37): App\Models\CategoryModel->getChildren('23', 'id')
#1 /home/joe/program/web/exam/system/CodeIgniter.php(807): App\Controllers\Test->page()
#2 /home/joe/program/web/exam/system/CodeIgniter.php(305): CodeIgniter\CodeIgniter->runController(Object(App\Controllers\Test))
#3 /home/joe/program/web/exam/system/CodeIgniter.php(220): CodeIgniter\CodeIgniter->handleRequest(NULL, Object(Config\Cache), false)
#4 /home/joe/program/web/exam/public/index.php(37): CodeIgniter\CodeIgniter->run()
#5 {main}
CRITICAL - 2018-09-27 08:23:35 --> Cannot use object of type stdClass as array
#0 /home/joe/program/web/exam/application/Controllers/Test.php(37): App\Models\CategoryModel->getChildren('23', 'id')
#1 /home/joe/program/web/exam/system/CodeIgniter.php(807): App\Controllers\Test->page()
#2 /home/joe/program/web/exam/system/CodeIgniter.php(305): CodeIgniter\CodeIgniter->runController(Object(App\Controllers\Test))
#3 /home/joe/program/web/exam/system/CodeIgniter.php(220): CodeIgniter\CodeIgniter->handleRequest(NULL, Object(Config\Cache), false)
#4 /home/joe/program/web/exam/public/index.php(37): CodeIgniter\CodeIgniter->run()
#5 {main}
CRITICAL - 2018-09-27 08:23:35 --> Cannot use object of type stdClass as array
#0 /home/joe/program/web/exam/application/Controllers/Test.php(37): App\Models\CategoryModel->getChildren('23', 'id')
#1 /home/joe/program/web/exam/system/CodeIgniter.php(807): App\Controllers\Test->page()
#2 /home/joe/program/web/exam/system/CodeIgniter.php(305): CodeIgniter\CodeIgniter->runController(Object(App\Controllers\Test))
#3 /home/joe/program/web/exam/system/CodeIgniter.php(220): CodeIgniter\CodeIgniter->handleRequest(NULL, Object(Config\Cache), false)
#4 /home/joe/program/web/exam/public/index.php(37): CodeIgniter\CodeIgniter->run()
#5 {main}
CRITICAL - 2018-09-27 08:23:35 --> Cannot use object of type stdClass as array
#0 /home/joe/program/web/exam/application/Controllers/Test.php(37): App\Models\CategoryModel->getChildren('23', 'id')
#1 /home/joe/program/web/exam/system/CodeIgniter.php(807): App\Controllers\Test->page()
#2 /home/joe/program/web/exam/system/CodeIgniter.php(305): CodeIgniter\CodeIgniter->runController(Object(App\Controllers\Test))
#3 /home/joe/program/web/exam/system/CodeIgniter.php(220): CodeIgniter\CodeIgniter->handleRequest(NULL, Object(Config\Cache), false)
#4 /home/joe/program/web/exam/public/index.php(37): CodeIgniter\CodeIgniter->run()
#5 {main}
CRITICAL - 2018-09-27 08:24:18 --> Cannot use object of type stdClass as array
#0 /home/joe/program/web/exam/application/Controllers/Test.php(37): App\Models\CategoryModel->getChildren('23', 'id')
#1 /home/joe/program/web/exam/system/CodeIgniter.php(807): App\Controllers\Test->page()
#2 /home/joe/program/web/exam/system/CodeIgniter.php(305): CodeIgniter\CodeIgniter->runController(Object(App\Controllers\Test))
#3 /home/joe/program/web/exam/system/CodeIgniter.php(220): CodeIgniter\CodeIgniter->handleRequest(NULL, Object(Config\Cache), false)
#4 /home/joe/program/web/exam/public/index.php(37): CodeIgniter\CodeIgniter->run()
#5 {main}
CRITICAL - 2018-09-27 08:24:19 --> Cannot use object of type stdClass as array
#0 /home/joe/program/web/exam/application/Controllers/Test.php(37): App\Models\CategoryModel->getChildren('23', 'id')
#1 /home/joe/program/web/exam/system/CodeIgniter.php(807): App\Controllers\Test->page()
#2 /home/joe/program/web/exam/system/CodeIgniter.php(305): CodeIgniter\CodeIgniter->runController(Object(App\Controllers\Test))
#3 /home/joe/program/web/exam/system/CodeIgniter.php(220): CodeIgniter\CodeIgniter->handleRequest(NULL, Object(Config\Cache), false)
#4 /home/joe/program/web/exam/public/index.php(37): CodeIgniter\CodeIgniter->run()
#5 {main}
CRITICAL - 2018-09-27 08:24:19 --> Cannot use object of type stdClass as array
#0 /home/joe/program/web/exam/application/Controllers/Test.php(37): App\Models\CategoryModel->getChildren('23', 'id')
#1 /home/joe/program/web/exam/system/CodeIgniter.php(807): App\Controllers\Test->page()
#2 /home/joe/program/web/exam/system/CodeIgniter.php(305): CodeIgniter\CodeIgniter->runController(Object(App\Controllers\Test))
#3 /home/joe/program/web/exam/system/CodeIgniter.php(220): CodeIgniter\CodeIgniter->handleRequest(NULL, Object(Config\Cache), false)
#4 /home/joe/program/web/exam/public/index.php(37): CodeIgniter\CodeIgniter->run()
#5 {main}
CRITICAL - 2018-09-27 08:24:48 --> Class 'Array' not found
#0 [internal function]: CodeIgniter\Debug\Exceptions->shutdownHandler()
#1 {main}
CRITICAL - 2018-09-27 08:24:48 --> Class 'Array' not found
#0 [internal function]: CodeIgniter\Debug\Exceptions->shutdownHandler()
#1 {main}
CRITICAL - 2018-09-27 08:24:48 --> Class 'Array' not found
#0 [internal function]: CodeIgniter\Debug\Exceptions->shutdownHandler()
#1 {main}
CRITICAL - 2018-09-27 11:29:28 --> shuffle() expects parameter 1 to be array, null given
#0 [internal function]: CodeIgniter\Debug\Exceptions->errorHandler(2, 'shuffle() expec...', '/home/joe/progr...', 45, Array)
#1 /home/joe/program/web/exam/application/Controllers/Test.php(45): shuffle(NULL)
#2 /home/joe/program/web/exam/system/CodeIgniter.php(807): App\Controllers\Test->page()
#3 /home/joe/program/web/exam/system/CodeIgniter.php(305): CodeIgniter\CodeIgniter->runController(Object(App\Controllers\Test))
#4 /home/joe/program/web/exam/system/CodeIgniter.php(220): CodeIgniter\CodeIgniter->handleRequest(NULL, Object(Config\Cache), false)
#5 /home/joe/program/web/exam/public/index.php(37): CodeIgniter\CodeIgniter->run()
#6 {main}
CRITICAL - 2018-09-27 14:53:01 --> shuffle() expects parameter 1 to be array, null given
#0 [internal function]: CodeIgniter\Debug\Exceptions->errorHandler(2, 'shuffle() expec...', '/home/joe/progr...', 45, Array)
#1 /home/joe/program/web/exam/application/Controllers/Test.php(45): shuffle(NULL)
#2 /home/joe/program/web/exam/system/CodeIgniter.php(807): App\Controllers\Test->page()
#3 /home/joe/program/web/exam/system/CodeIgniter.php(305): CodeIgniter\CodeIgniter->runController(Object(App\Controllers\Test))
#4 /home/joe/program/web/exam/system/CodeIgniter.php(220): CodeIgniter\CodeIgniter->handleRequest(NULL, Object(Config\Cache), false)
#5 /home/joe/program/web/exam/public/index.php(37): CodeIgniter\CodeIgniter->run()
#6 {main}
CRITICAL - 2018-09-27 14:53:29 --> shuffle() expects parameter 1 to be array, null given
#0 [internal function]: CodeIgniter\Debug\Exceptions->errorHandler(2, 'shuffle() expec...', '/home/joe/progr...', 45, Array)
#1 /home/joe/program/web/exam/application/Controllers/Test.php(45): shuffle(NULL)
#2 /home/joe/program/web/exam/system/CodeIgniter.php(807): App\Controllers\Test->page()
#3 /home/joe/program/web/exam/system/CodeIgniter.php(305): CodeIgniter\CodeIgniter->runController(Object(App\Controllers\Test))
#4 /home/joe/program/web/exam/system/CodeIgniter.php(220): CodeIgniter\CodeIgniter->handleRequest(NULL, Object(Config\Cache), false)
#5 /home/joe/program/web/exam/public/index.php(37): CodeIgniter\CodeIgniter->run()
#6 {main}
CRITICAL - 2018-09-27 14:53:39 --> shuffle() expects parameter 1 to be array, null given
#0 [internal function]: CodeIgniter\Debug\Exceptions->errorHandler(2, 'shuffle() expec...', '/home/joe/progr...', 45, Array)
#1 /home/joe/program/web/exam/application/Controllers/Test.php(45): shuffle(NULL)
#2 /home/joe/program/web/exam/system/CodeIgniter.php(807): App\Controllers\Test->page()
#3 /home/joe/program/web/exam/system/CodeIgniter.php(305): CodeIgniter\CodeIgniter->runController(Object(App\Controllers\Test))
#4 /home/joe/program/web/exam/system/CodeIgniter.php(220): CodeIgniter\CodeIgniter->handleRequest(NULL, Object(Config\Cache), false)
#5 /home/joe/program/web/exam/public/index.php(37): CodeIgniter\CodeIgniter->run()
#6 {main}
